The probability of passing the math class of Professor Goodrum is 59%, the probability of passing Professor Cruise's physics
class is 26%, and the probability of passing both is 17%. What is the probability of passing one or the other?
(Give your answer as a whole percent number.)
probability of passing one or the other:

Answers

Answer 1

Answer:

  51%

Step-by-step explanation:

Given P(passing math) = 59%, P(passing physics) = 26%, and P(passing both) = 17%, you want to find the probability of passing only one of the courses.

Probability relations

We can record the given probabilities in a 2-way table (values shown in blue). The table is completed by making sure the totals add up (values shown in black).

The probability of passing one course and failing the other is the sum of the probabilities with a yellow background:

  42% +9% = 51%

The probability of passing one or the other is 51%.

__

Additional comment

We can also get there using the relation ...

  P(A+B) = P(A) +P(B) -P(AB)

The union of A and B also includes their overlap:

  P(A+B) = P(AB') +P(A'B) +P(AB)

In other words, the probability of interest is ...

  P(AB') +P(A'B) = P(A) +P(B) -2×P(AB) = 59% +26% -2(17%)

  P(AB') +P(A'B) = 51%

The Probability Of Passing The Math Class Of Professor Goodrum Is 59%, The Probability Of Passing Professor

Related Questions

The table lists the eight human blood types.
It also shows how blood types determine who a person can donate blood to and receive blood from.
Blood type
A+
B+
AB+
AB-
A-
B-
0+
0-
Can donate to
A+, AB+
B+, AB+
AB+
AB+, AB-
A+, A-, AB+, AB-
B+, B-, AB+, AB-
(a) X = 1
(b) x = 0
A+, B+, AB+, 0+
All blood types
Can receive from
A+, A-, 0+, 0-
B+, B-, 0+, 0-
All blood types
A-, B-, AB-, 0-
A-, O-
B-, 0-
0+, 0-
0-
Let U be the set of all eight human blood types.
U=(A-, B-, AB+, AB-, A-, B-, 0-,0-)
Let X be the set of blood types that type AB- cannot receive blood from.
Let I be the set of blood types that type B+ can donate blood to.
Find the sets below. Write each answer in roster form or as 2.
CE
D
AB-
0.0 Ø
8+
AB+

Answers

little did they realize they could do with the help they could

Feng says that the set of ordered pairs {(0, 1), (3, 2), (3, -5), (5, 4)} represents a function. Determine whether his statement is true or false. Select the correct answer and justification. Multiple choice question. cross out A) True; every element of the domain is paired with an element of the range. cross out B) True; each relation is written as an ordered pair. cross out C) False; one element of the domain, 3, is paired with two different elements in the range, –5 and 2. cross out D) False; one element of the range, 3, is paired with two different elements in the domain, –5 and 2.

Answers

Answer:

It's C, a function cannot have an x paired with 2 different y's

the difference between compound interest and simple interest on the same sum of rupees 8000 for 2 year is rupees 20 find the rate of interest ?​

Answers

Answer:

  5%

Step-by-step explanation:

You want the interest rate that makes the difference between compound and simple interest on ₹8000 for two years be ₹20.

Interest formulas

The formula for the value of an account earning simple interest is ...

  A = P(1 +rt) . . . . P earning interest rate r for t years

The formula for the value of an account earning compound interest is ...

  A = P(1 +r)^t . . . . P earning interest rate r for t years

Application

We want the difference in these amounts over 2 years to be ₹20.

  8000(1 +r)^2 -8000(1 +2r) = 20

  1 +2r +r^2 -(1 +2r) = 20/8000 . . . . . divide by 8000, expand the square

  r^2 = 1/400 . . . . . . simplify

  r = 1/20 = 5% . . . . . take the square root

The rate of interest is 5% per year.

Three angles add up to 180 degrees, angle one has a measure of 8x+8, angle two has a measure of 8x+8 and angle three has a measure of 2x+8.

Given that the sum of the angles is 180 degrees, what is the measure of angle one? Round your answer to the hundredths place IE 79.50.

Answers

The first angle will be 77.33°.

How to calculate the angle?

It should be noted that the total angles will be 180°.

This will be illustrated as:

8x + 8 + 8x + 8 + 2x + 8 = 180

18x + 24 = 180

18x = 180 - 24

18x = 156

x = 8.667

The first angle will be

= 8x +8

= 8(8.667) + 8

= 77.33°

Learn more about angles on:

brainly.com/question/25716982

#SPJ1

Choose the number phrase that correctly matches the word phrase “18 less 6.”
18 x 6
18 + 6
6 – 18
18 – 6

Answers

It is 18-6 out of all the other ones

What is the solution to r/-3 = 12? A. r=-36 B. r= -4 C. r=4 D. r=36 (1 point)

Answers

The answer is ( c= 9 r=-36)
Explain the answer (r/-3= 12 r=-4c r=4c) answer is (c = 9 f=-36) Hope it helps:)

(7m³ +8m²-m+2.8)-(-3m³ +9m+3.6)​

Answers

Answer:

The correct answer would be,

= 10m^3 + 8m^2 - 10m - 0.8

Step-by-step explanation:

First you subtract the m^3 terms :

> 7m^3 + 3m^3

> 10m^3

Then you subtract m^2 , in this case we only have 1 m^2 :

> 8m^2

Then you subtract the m terms :

> -m - 9m

> -10m

The lastly you subtract the last terms :

> 2.8 - 3.6

> -0.8

= 10m^3 + 8m^2 -10m -0.8

(Make sure to distribute the negative before you solve it.) Just a point!!

Answer:

10m³+8m²-10m-0.8

Step-by-step explanation:

(7m³ +8m²-m+2.8)-(-3m³ +9m+3.6)

Use the sign to open the bracket we have;

7m³ +8m²-m+2.8+3m³-9m-3.6

bring like terms together

7m³+3m³+8m²-9m-m-3.6+2.8

Simplifying we have;

10m³+8m²-10m-0.8

hope it helps...

Please mark brainliest

Miraawesome

One pizza will feed 4 people. How many pizzas are needed for 36 people?
pizzas

Answers

Answer:

9 Pizzas

Step-by-step explanation:

9 Pizzas are needed!

36/4 = 9

Answer this question please

Answers

Answer:

[tex] \sf (- \infty, 58] [/tex]

Step-by-step explanation:

Express as interval = [tex] \sf (- \infty, 58][/tex]

The cold water tap can fill a container two hours faster than the hot water tap. The two taps together can fill a container in 80 minutes. How long does it take each tap to fill the container on its own?

Answers

Answer:

4 hours and 2 hours

Step-by-step explanation:

Let the time for cold tap be c and hot tap be h.

Convert2hrs = 120 min

Set equations

The cold water tap can fill a container two hours faster than the hot water tap:

c - h = 120

The two taps together can fill a container in 80 minutes:

1/c + 1/h = 1/80

Solve the system by substitution

c = h + 1201/c + 1/h = 1/801/(h + 120) + 1/h = 1/80(h + h + 120)/(h(h+120)) = 1/8080(2h + 120) = h(h + 120)160h + 9600 = h² + 120hh² - 40h - 9600 = 0h² - 40h + 400 = 10000(h - 20)² = 100²h - 20 = 100 (taking positive root only, since time is positive value) h = 120 min = 2 hrs

Find c

c = 120 + 120 = 240 min = 4 hrs

List some TV shows or movies with permissive parents.

Answers

Answer: full house,fairly oddparents, the simsons

edit^^^ a movie is clueless or even mean girls

Step-by-step explanation:

5/8 of the pens in a box are blue pens. 4/5 of the remaining are red pens.what fraction of the pens are red ?​

Answers

Answer is 3/10 fraction are red

Step by step

If 5/8 are blue, 3/8 are remaining.

It says 4/5 of the remaining (3/8) are red.

4/5 x 3/8 = red pens

Cross multiply

12/40

Simplify to 3/10

Robbie opens an account at a local bank by depositing $100. The account pays 2.4% interest, compounded weekly. He deposits $100 every week for 3 years.
b. Write the future value function if x represents the number of weeks.
c. Use a graphing calculator to graph the future value function.
d. Using the graph, what is the approximate balance after 2 years?

Answers

The equation of the future value function if x represents the number of weeks is [tex]= P((1+r/x)^{nt} - 1)/(r/x)[/tex].

What is equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign. Equation, statement of equality between two expressions consisting of variables and/or numbers.

Given:

Robbie depositing= $100

Interest=2.4%

Time=3 years.

According to given question we have

P = periodic payment = $100 / week

r = interest rate = 2.4%, compounded weekly

t = 3 years

x = 52 weeks (# of times interest is compounded per year)

To write a equation we have

B = Future Value

[tex]= P((1+r/x)^{nt} - 1)/(r/x)[/tex]

Therefore, the equation of the future value function if x represents the number of weeks is [tex]= P((1+r/x)^{nt} - 1)/(r/x)[/tex].

Learn more details about equation here:

https://brainly.com/question/10413253

#SPJ1

A rain gauge collected 0.2 inches of
rain in 30 minutes. If it keeps
raining at the same rate, what is the
total time it will take to collect 1
inch of rain?

Answers

Answer:

you're answer will be 2 hours and 30 minutes

Step-by-step explanation:

i hope that helps you! :))

Answer is 150 minutes or 2 hours 30 minutes

Step by step

.2 inches in 30 minutes = 1 inch in x minutes

.2/30 = 1/x cross multiply

.2x = 30

Divide both sides by .2 to solve for x

.2/.2 x = 30/.2

X = 150 minutes to fill the gauge to 1”

Find the slope of a line that passes through (4.5,3.5) and (9.5,5.5)

M =

Answers

[tex](\stackrel{x_1}{4.5}~,~\stackrel{y_1}{3.5})\qquad (\stackrel{x_2}{9.5}~,~\stackrel{y_2}{5.5})~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{5.5}-\stackrel{y1}{3.5}}}{\underset{run} {\underset{x_2}{9.5}-\underset{x_1}{4.5}}}\implies \cfrac{2}{5}[/tex]

Find the value of PT if
PT=4x+1 and 7x-8

Answers

Answer:

4x+8+7x-8

Step-by-step explanation:

4x+7x+8-8

11x+0

11x.

solve for y : 3x-2y+12>0

Answers

Answer:

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

[tex]y < \frac{3x}{2} +6[/tex]

A gasoline tank contains 9.6 hectolitres (hL) when it is 60% full. What is the capacity of the tank (in hL)?

Answers

The capacity of the full tank is 16 hectolitre. percentage problem.

A gasoline tank contains 9.6 hectolitres (hL) when it is 60% full. when the tank is 100% full that is the capacity of the tank.

so, the capacity of the full tank is 9.6x(100/60) = 16 hL.

this a percentage problem. In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%". A percentage is a dimensionless number; it has no unit of measurement.

Learn more about percentage here:

https://brainly.com/question/13450942

#SPJ9

Find the edge length of the cube.​

Answers

Answer:

The volume of a cube is the edge length cubed (S^3)

To find the edge length when the volume is known find the cubic root of the volume.

Step-by-step explanation:

Edge = ∛1/27

Edge = 1/3 ft.

Ay-Jiuan can buy 12 songs for $10, or she
can pay $0.85 per song. Which option has the lesser price per song?

Answers

Nose nsjwjwjqjwjhwjwbwbnwmwjwhwhw

Answer: The 12 songs for $10

Step-by-step explanation: 12 / 10 = 1.2 while 12 / 0.85 = 14.11

HELP
Graph the following system of inequalities on the coordinate plane. You will need to explain your
work. Each correct line graphed WITH the correct explanation and shading is worth 2 points.
> − −
+ ≤
> −

Answers

See attachment for the graphs of the inequalities

How to graph the system of inequalities?

To do this, we analyze and plot each inequality at a time

Having said that, we have

Inequality 1: y > -3x - 2

Here, we have

y > -3x - 2

The inequality > implies that the right-hand side of the origin will be shaded

Also, it means that the line of the inequality will be a dotted line

Inequality 2: 4x + 5y ≤ 20

Here, we have

4x + 5y ≤ 20

The inequality ≤ implies that the left-hand side of the origin will be shaded

Also, it means that the line of the inequality will be a closed line

Inequality 3: y > -4

Here, we have

y > -4

The inequality > implies that the upper part of the origin will be shaded

Also, it means that the line of the inequality will be a dashed line

See attachment for the graphs of the inequalities

Read more about inequalities at

https://brainly.com/question/25275758

#SPJ1

Numbers that can be written as a power in more than one way

Answers

Numbers that can be written as a power in more than one way is known as exponents .

WHAT ARE EXPONENTS?

A sign that denotes raising to a power that is placed above and to the right of a mathematical expression. for example , [tex]2^{a}[/tex].

The mathematical procedure known as exponentiation, abbreviated as bn, involves the base number (b) and the exponent (or power) number (n). In English, it is pronounced "b (raised) to the (power of) n." [1] Exponentiation is the process of repeatedly multiplying bases, where n is a positive integer, and the product is known as bn.

The exponent is typically denoted by a superscript to the right of the base. The term "b raised to the nth power," "b (raised) to the power of n," "the nth power of b," "b to the nth power," or, most simply, "b to the nth," is used to describe bn.

CALCULATION

Numbers that can be written as a power in more than one way is known as exponents .

These numbers are basically written to save time to multiply the same number multiple times .

learn more about exponents here :

brainly.com/question/4564462

#SPJ9

Find the equation of the line with slope m=- 3 that contains the point (9, - 15) Use fractions in your response, not decimals

Answers

Answer:

y = - 3x + 12

Step-by-step explanation:

Slope intercept form of line

y = mx + b where m = slope, b = y-intercept

==> y = -3x + b is the equatin

To find b, plug in values for point x = 9, y =-15 and solve for b

-15 = -3(9) + b

-15 = -27 + b

Add 27 both sides

-15 + 27 = b

12 = b

b = 12

Equation is
y = - 3x + 12

Practice Another
A city lot has the shape of a right triangle whose hypotenuse is 4 ft longer than one of the other sides. The perimeter of the lot is 440 ft. How long is each side of the lot?
short leg
ft
long leg
ft
hypotenuse
ft


Short leg:___________ft

Long Leg:___________ft

Hypotenuse:___________ft

Answers

The length of each sides of the right triangle are as follows:

short leg = 27 ftlong leg = 90 fthypotenuse = 94 ft

How to find the sides of a right triangle?

The shape of the city lot is a right triangle.

The hypotenuse side is 4 ft longer than one of the other side.

The perimeter of the lot is 440 ft.

Therefore, using Pythagoras theorem,

let

x = the other side

y = the second leg

x² + y² = (x + 4)²

x² + y² = (x + 4)(x + 4)

x² + y² = x² + 4x + 4x + 16

x² + y² = x² + 8x + 16

y² = 8x + 16

Hence,

x + x + 4 + y = 440

2x + y + 4 = 440

2x + y = 436

2x + y = 436

y = 436 - 2x

y² = 8x + 16

(436 - 2x)(436 - 2x) = 8x + 16

190096 - 872x - 872x - 4x² = 8x + 16

190096 - 1744x - 4x² = 8x + 16

4x² + 1752x -190080 = 0

4(x² + 438x - 47520) = 0

x² + 438x - 47520 = 0

Therefore,

x = 90 and x = - 528

Therefore, the hypotenuse side is 94 ft.

94² - 90² = y²

y = √8836 - 8100

y = √736

y = 27.1293199325

y = 27 ft

Therefore, the short leg, long leg and hypotenuse are 27 ft, 90 ft and 94 ft.

learn more on right triangle here: https://brainly.com/question/24078791

#SPJ1

The drama club is selling tickets to their play to raise money for the show's expenses. Each student ticket sells for $6 and each adult ticket sells for $9. There was a total of $747 in revenue from the sale of 98 total tickets. Write a system of equations that could be used to determine the number of student tickets sold and the number of adult tickets sold. Define the variables that you use to write the system.

Answers

Answer:

x + y = 989x + 6y = 747

==============================

Let the number of adult tickets be x and student tickets be y.

Set equations

Number of tickets:

Adult tickets + student tickets = 98x + y = 98

Amount of revenue:

Total of adult tickets = 9x, total of student tickets = 6y9x + 6y  = 747

At a point on the ground 15ft from the base of a​ tree, the distance to the top of the tree is 1 ft more than 2 times the height of the tree. Find the height of the tree.

Answers

At a point on the ground 15ft from the base of a​ tree, the distance to the top of the tree is 1 ft more than 2 times the height of the tree. Find the height of the tree.

The height of the tree is 8ft.

Given that,

A right triangle has two legs, which are height and (15 feet) from the base.

The hypotenuse is 15 feet from the base to the top of the tree.

or 2(height) + 1ft.

Let us take a as height of the tree; b=distance from base=15 ft; c=hypotenuse=2a+1ft

The area of the square created on the hypotenuse of any right triangle is equal to the sum of the areas of the squares formed on the triangle's legs:

[tex]a^{2} +b^{2} =c^{2}[/tex]

[tex]a^{2} +(15ft)^{2}=(2a+ 1ft) ^{2}[/tex]

[tex]a^{2} +225ft^{2}=4a^{2} +4a+1\\ 0=3a^{2}+4a-224\\ 0=(a-8)\times(3a+28)\\[/tex]

Now,

a-8=0 (or) 3a+28=0

a=8 (or) a=[tex]\frac{-28}{3}[/tex]

Therefore, The height of the tree is 8ft.

To learn more about height visit: https://brainly.com/question/10726356

#SPJ9

PLEASE HELP!!! DUE TMRW!!!

Answers

The values of the required parameters based on the analysis of the dataset are as follows;

X MIN = 0

X MAX = 2

X Scl = 0.5

Y MIN = 0

Y MAX = 110

Y Scl = 20

What is a dataset?

A dataset is a presentation of a collection of data. In a tabular form, a dataset is arranged such that each column of the table presents the data of a specific variable.

The table of values in the question are presented as follows;

d   [tex]{}[/tex]              p

0   [tex]{}[/tex]             110

0.25  [tex]{}[/tex]        90

0.5  [tex]{}[/tex]           80

0.75  [tex]{}[/tex]         75

1  [tex]{}[/tex]         [tex]{}[/tex]      75

1.25  [tex]{}[/tex]          40

1.5  [tex]{}[/tex]            40

1.75  [tex]{}[/tex]           10

2  [tex]{}[/tex]               0

Please find attached a plot of the data in the table presented in the question

X MIN is the minimum x-value obtained from the set of x-values, which is the minimum value of the domain of the data in the table.

From the table in the question; X MIN = 0

X MAX is the maximum x-value obtained from the set of x-values of the data in the table, which is also the maximum x-value of the range of input values in the table.

The maximum x-value in the table, X MAX = 2

X scl is the scale the specification of the distance between consecutive tick marks on the x-axis.

The distance between tick marks on the x-axis of the attached graph, X Scl = 0.5

Y MIN is the minimum y-value obtained from the set of y-values, which is the minimum value of the range of the data presented in the table

The Y MIN obtained from the table is 0

Y MAX is the maximum y-value obtained from the y-values of the data in the table, which is the maximum value of the range of the data in the table

The maximum y-value, Y MAX = 110

Y Scl is the distance between consecutive tick marks on the y-axis of the graph of the data

The Y Scl of the y-axis of the attached graph Y Scl = 20

Learn more about data analysis here:

https://brainly.com/question/28390057

#SPJ1

The average rate of change of

f from x =2 to x =5

is _________ -5/4 is incorrect

Answers

Answer:

-1 or -3/3

Step-by-step explanation:

Average rate of change = slope

x = 2 x = 5

(2,3) (5,0)

Slope formula: y₂-y₁/x₂-x₁

(0-3)/(5-2) = -3/3 or -1

What is the standard form of 2y =6x + 4

Answers

x= -2/3 hope it help:)

Answer: solve for x

x=[tex]\frac{y-2}{3}[/tex]

solve for y

y=3x+2

Step-by-step explanation:

solve for x

2y=6x+4

Swap sides so that all variable terms are on the left hand side.

6x+4=2y

Subtract 4 from both sides.

6x=2y−4

Divide both sides by 6.

6

6x

Dividing by 6 undoes the multiplication by 6.

[tex]x=\frac{2y-4}{6}[/tex]

Divide −4+2y by 6.

x=[tex]\frac{y-2}{3}[/tex]

solve for y

2y=6x+4

The equation is in standard form.

2y=6x+4

Divide both sides by 2.

[tex]\frac{2y+2}{2} =\frac{6x+4}{2}[/tex]

Dividing by 2 undoes the multiplication by 2.

[tex]y=\frac{6x+4}{2}[/tex]

Divide 6x+4 by 2.

y=3x+2

What is the next fraction in this sequence? Simplify your answer.
1/3, 1/9, 1/27, 1/81,
Submit
...

Answers

Answer:

1/243

Step-by-step explanation:

Each denominator is multiplied by 3 from the last one

3 x 3 = 9

9 x 3 = 27

27 x 3 = 81

81 x 3 = 243

Other Questions
9y=99Ingrese su respuesta... example:Sam doesn't like cooking, does he?1. You are on duty, ______?2. Tom is only twelve, _____?3. They speak French, _____?4. They don't live in Paris, ____?5. Your car isn't experience, ____?6 . I'm very talkative, ____?7. His brother is noisy, ____?8. You don't watch TV, ____?9. He is a doctor, ____?10. I'm not very happy, ____? Which relation is a function of x?O {(1, 2), (7, 6), (3, 2), (1, 0), (5, 6)}y2-6X00009-7Ox=3y-7X=-5-4-3-25432-22 3 4 5 x MOWING Cordell is mowing his front lawn. His mailbox is on the edge of the lawn. Cordell starts mowing near the mailbox and moves away from the mailbox, towards his house. He continues to move back and forth between the edge of the lawn and the house. Select a reasonable graph that shows the distance Cordell is from the mailbox as he mows. Let the horizontal axis show the time and the vertical axis show the distance from the mailbox. the nurse is teaching the mother of a 3-year-old child about techniques to promote medicine adherence. what instructions should the nurse include in the teaching? select all that apply. (ross p1.15) consider a group of 20 people. if everyone shakes hands with everyone else, how many handshakes take place? 11) What two numbers will 5 be between on a number line?a) 2.01 and 2.2462.0 and 3.252.1 and 2.156d) 1.9 and 2.0 kim is the owner of a local sporting goods store and has paid major league baseball a fee to sell their products. this is an example of . 17. Higher Order Thinking The average ratethat human hair grows is 1.27 centimetersper month. Elena let her hair grow for3 months. Then she got 1.9 centimeters ofher hair cut off. If Elena's hair grows at theaverage rate, how much longer is Elena'shair now than 3 months ago? Explain howto solve the problem. Then solve. Factor completely.100-9xsomeone help please many businesses borrow money during periods of increased business activity to finance inventory and accounts receivable. nordstrom, inc., is one of americas most prestigious retailers. each christmas season, nordstrom builds up its inventory to meet the needs of christmas shoppers. a large portion of these christmas sales are on credit. as a result, nordstrom often collects cash from the sales several months after christmas. assume that on november 1 of this year, nordstrom borrowed $4.8 million cash from bank of america to meet short-term obligations. nordstrom signed an interest-bearing note and promised to repay the $4.8 million in six months. the annual interest rate was 8%. all interest will accrue and be paid when the note is due in six months. nordstroms accounting period ends december 31. required: 1. prepare the journal entry to record the note on november 1. 2. prepare any adjusting entry required at the end of the annual accounting period on december 31. 3. prepare the journal entry to record payment of the note and interest on the maturity date, april 30. If you decide to attend college to earn a four-year degree, what is the opportunity cost of this decision? In the figure, the radius of the large circle is three times the radius of the small circle. About what percent of the large circle is covered by the small circle?I NEED THIS NOW PLEEEEEASE!! create a list of numbers 0 through 40 and assign this list to the variable numbers. then, accumulate the total of the lists values and assign that sum to the variable sum1. suppose a function has a parameter named x, and the body of the function changes the value of x. if we do not want the change affect to the original x, what type of parameter x should we use? when preparing a trial balance, there are certain steps that need to be followed. place the following steps in the correct order. An image shows two right triangles A B C and D E F. Triangle A B C: Side A B is 3. Side B C is 5. Side C A is 4. Triangle D E F: Side D E is 6. Side E F is 10. Side F D is 8. Which statement about the two triangles is correct? ~ because You cannot tell if the triangles are similar because the angles are not given. is not similar to , because , while . is congruent to Solve 0. 504 8. answer choices: 7. 496 0. 063 0. 630 4. 32 who is martin luther king jr? these are the means and standard deviations for samples of building heights in two different cities. city a city b mean: 120 ft mean: 240 ft standard deviation: 20 ft standard deviation: 12 ftselect the two true statements.